Scale.



No. 649,9l5. Pdtented ma '22, I900.

A. ma VILBISS, In.

SCALE.

(Application filed Jan. 24, 1899.)

(No Model.)

mam, 491% 57 I Adams w lNVE/VTOR:

UNITED STATES PATENT QFFICE.

ALLEN DE VILBISS, JR, OF TOLEDO, OHIO, ASSIGNOR TO THE DE VILBISSCOMPUTING SCALE COMPANY, OF SAME PLACE.

SCALE.

SPECIFICATION forming part of Letters Patent No. 649,915, dated May 22,1900.

pplication filed January 24, 1899. Serial No. 703,253. (N0 model- ToctZZ whom it may concern:

Be it known that I, ALLEN DE VILBISS, J12, a citizen of the UnitedStates, and a resident of Toledo, Lucas county, State of Ohio, haveinvented certain new and useful Improvements in Scales; and my preferredmanner of carrying out the invention is set forth in the following full,clear, and exact description, terminating with claims particularlyspecifying the novelty.

This invention relates to scales, and more especially to that classthereof known as price-scales, which employ a pendulum and are adaptedto compute the total selling price; and the object of the same is toeffect improvements in devices of this character, more especiallyimprovements over my former patent, dated March 14, 1899, and numbered621,297.

To this end the invention consists in the details of constructionhereinafter more fully set forth and claimed and as shown in theaccompanying drawings, in which- Figure 1 is a side elevation of thisscale complete. Fig. 2 is a similar view with the front plate of thecasing removed, and hence showing a section. Fig. 3 is a verticalsection on the line 3 3 of Fig. 2.

Referring to the drawings by reference-letters, A designates thescale-beam, fulcrumed at a in the usual manner, as on a knife-edge, andO is a second pivot or knife-edge which in the present instance supportsthe standard M of the platform or table R, although it will be clearthat by a slight change the wellknown pan could be substituted for thetable without departing from the spirit of my in vention. Nothing new isclaimed for this much of the device.

The letter A designates an auxiliary or tare beam connected and movingin unison with the main scale-beam A, and on this auxiliary beam ismounted a weight 0/,adapted to be moved to counterbalance or offset theweight of the crock or receptacle for containing the matter beingweighed. Said auxiliary beam preferably extends past the fulcrum a andis made as long as convenient in order to give as large a space aspossible for each unit of weight, and to this end it is marked with graduations, as shown.

The letter E, Fig. 3, designates bearings of any suitable character fastwithin the housing B. D are knife-edges or pivots for said bearings, andD is a pendulum mounted thereon and hangin g normally vertical withinsaid housing, its body carrying a weight J of any kind and being adaptedto swing outward through a slot S, properly located in the side of thehousing, as shown. Around said knifeedges D is a disk D, rigid with thependu lum and having therein at one side of and normally above thecenter a knife-edge or pivot N, from which a link or connection F leadsto the inner end of the beam A, as shown, and from thediametrically-opposite side of this disk projects a screw N, carrying anadjustable counterpoiseaveight n to offset the weight of the link F byreason of the fact that it stands always opposite the knife-edge N, andhence increases and decreases in leverage as the link increases anddecreases.

The letter Z designates an upright cylinder containing mercury, oil, orother fluid agent sufficiently dense to impede movement therethrough,and Z is a piston-rod led from any part, such as the scale-beam A, andhaving a piston Z" necessarily moving in the fluid agent within saidcylinder, by which means vibration of the scale-beam, and hence of itsconnected parts, is impeded or prevented.

H is a hand or index of any suitable light material. and which isrigidly secured to the disk D in a position to stand normally oblique toa vertical, such hand preferably having in its body a series of openingsH, in scribed herein opposite thereto with the numerals 6, 5, 4, 3,.&c.,although it will be clear that a hand inscribed in any proper manner andcooperating with the conti guous parts will answer equally well. It willbe obvious that the marked portion of the hand moves through the arc ofa circle, and in the present instance Iprovide a graduated table L,supported by the framework of the machine adjacent said portion of thehand and properly marked with several lines of figures to indicate thetotal cost of the article being weighed, this cost being the product ofthe number of units U, (pounds,) indicated also on the table, multipliedby the price per pound, as here indicated on the hand or index. It willbe obvious that fractions of a pound or fractions of a cent per poundcan be indicated in the same way, as well as the totals thereof. Inorder to counterbalance the weight of the hand H, I provide a screw h,projecting radially from the disk D, diametrically opposite the indexand carrying a counterpoise-weight 7L. It will be clear that theseweights n and h gain and lose in leverage reciprocally with the link andindex and, if necessary, may be adjusted to more accuratelycounterbalance the same.

The operation of this improved scale is as follows: The machine beingproperly set up and adjusted, let us suppose that a onepound crock isplaced on the table R, in which it is desired to weigh three pounds oflard at six cents perpound. The seller first adjusts thecounterbalance-weight a to 1 on the tare-beam A or to any point where itWill offset the weight of the crock, the proper point being indicated bythe balance ,of the scale, at which time the index H will stand as seenin Fig. 1. The lard is then placed in the crock, the table R and beamAdescend, and through the link F the disk D" is'turned on its center D,thereby causing the index H to move over the table L until 3 in theunits line U is reached. Meanwhile the piston Z" in the cylinder Zdescends Within the fluid and prevents undesirable vibrations of theindex. Opposite the uppermost opening H here shown in the index ismarked the figure 6,, indicating that price per pound, and my table isso arranged that when the index stands to indicate 3 units the operatormay read through this opening the product of three times six, oreighteen, which is the total cost of the merchandise being sold.

What I claim as new is 1. In a scale, the combination with the centralpivot, a disk mounted thereon and having a pendulum hanging normallyvertical and an index standing normally oblique, a link-pivot connectedwith this disk and standing normally above said central pivot, a screwprojecting fromthe disk opposite the linkpivot, and acounterbalancing-weight adjustable on this screw; of a table with whichthe index coacts, a beam mounted on a fulcrum, a pan or platform, and alink connecting said beam with the link-pivot, all substantially as andfor the purpose set forth.

2. In a scale, the combination with the housing having bearings, adiskhaving a central pivot mounted therein, a pendulum hanging normallyvertical from the disk, an index standing normally oblique to thispendulum, a link-pivot connected to the disk and normally above itscentral pivot, screws projecting from the disk, andcounterbalancing-weights adjustable on such screws; of

a beam mounted on a fulcrum, a pan or plat-

